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Cursor
Courtesy of Cursor (Anysphere) · Press kit, editorial use (opens cursor.com)

Cursor

by Anysphere (Cursor)US

ScalingStage 5 of 5

Widely used AI code editor with background agents and its own Composer model.

Updated 14 Aug 2026Checked 25 Sep0 updates this week

Milestones

No announced next step
  1. Cursor editor launched2023Complete.
  2. Agent mode introducedNov 2024Complete.
  3. Cursor 2.0 with Composer model29 Oct 2025Complete.

Most important updates

  • 14 Aug 2026
  • 19 Mar 2026
  • 29 Oct 2025
  • 24 Jul 2025
  • 12 Nov 2024

Current obstacles

  • Relying on rivalsCursor depends on models from labs selling rival coding tools, squeezing margins and control.

Physics limits

  • Speed and smarts pull against each otherSmall models answer in milliseconds for inline edits but reason less; large models reason better but take seconds to minutes, because each token re-reads more weights.
  • Large codebases overflow the contextBig repositories hold tens of millions of tokens, far beyond a 1M-token window, so the agent must search and summarise and can miss distant dependencies.
  • Errors compound over long tasksIf each step succeeds 99% of the time, a 100-step task succeeds only about 37% of the time (0.99^100). Agents need near-perfect per-step reliability to work for hours.

How it works

4 parts
A code editor on a laptop: Cursor is a modified VS Code that predicts the next edit and runs an agent inside this kind of editor window
A code editor on a laptop: Cursor is a modified VS Code that predicts the next edit and runs an agent inside this kind of editor windowPhoto: Arnold Francisca · Unsplash License (opens unsplash.com)
Editor

A fork of VS Code

Cursor is a modified VS Code, so extensions and shortcuts carry over while AI is wired into editing, search and the terminal.

Tab

Predicting your next edit

A fast in-house model suggests the next change, often several lines or a jump elsewhere in the file, in the time it takes to type.

Index

Searching by meaning

The repo is split into chunks turned into embeddings (numeric fingerprints of meaning), so the agent can pull up relevant code fast.

Composer

Its own agent model

Composer, trained with reinforcement learning inside real codebases, runs agent tasks quickly; Cursor 2.0 runs several agents in parallel.

Update log

5 updates

Fri 14 Aug

  • Major: PressCommercial

Thu 19 Mar

  • Major: BlogSoftware

Wed 29 Oct 2025

  • Minor: BlogSoftware

Thu 24 Jul 2025

  • Minor: BlogSoftware

Tue 12 Nov 2024

  • Minor: BlogCommercial

About Anysphere (Cursor)

The team behind Cursor

Anysphere (Cursor)

Cursor code editor, Composer model

Anysphere makes Cursor, an AI code editor built on VS Code, founded in 2022 by four MIT students. Cursor mixes other labs' models with its own and became one of the fastest-growing software companies.

  • SpaceX bought Anysphere for about $60B in stock; the deal closed on 14 August 2026.
  • Cursor 2.0 (October 2025) added Composer, Anysphere's own fast coding model.
  • Relies on Anthropic and OpenAI models while competing with their coding agents.

cursor.com (opens cursor.com)Company profile →

Founded
20224 yrs
Headquarters
United States
Status
Subsidiaryof SpaceX
Valuation
$60BSpaceX-ownedAug 2026
Raised
$2.3B1 round
Last round
Series D · $2.3BNov 2025$29B post
Works in
AICoding agents
Coverage
1 program · 7 updateslatest 14 Aug 2026checked 25 Sep
Lead investors
AccelCoatue
Acquired by
SpaceX
People
Michael TruellCo-founder and CEO
Primer